An exploration of the anus, colon and large intestines either digitally(a "finger wave") or by a Sigmoidoscope (the "Silver Stallion") to detect polyps, pre-cancerous lesions or early cancer.

Don't believe the proctologist when he tells you that you'll only experience mild discomfort when they video your colon...it feels like they sent an angry dwarf up your ass with a camcorder strapped to his spiked helmet.